TY - JOUR

T1 - Modeling of particle deposition in a vertical turbulent pipe flow at a reduced probability of particle sticking to the wall

AU - Eskin, Dmitry

AU - Ratulowski, John

AU - Akbarzadeh, Kamran

N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011/10/15

Y1 - 2011/10/15

N2 - Particle deposition on the wall in a dilute turbulent vertical pipe flow is modeled. The different mechanisms of particle transport to the wall are considered, i.e., Brownian motion, turbulent diffusion and turbophoresis. The Saffman lift force, the electrostatic force, the virtual mass effect and wall surface roughness are taken into account in the model developed. A boundary condition that accounts for the probability of particle sticking to the wall is suggested. An analytical solution for deposition of small Brownian particles is obtained. A particle relaxation time range, where the model developed is reliably applicable, is evaluated. Computational results obtained at different particle-wall sticking probabilities in the wide particle relaxation time range are presented and discussed.

AB - Particle deposition on the wall in a dilute turbulent vertical pipe flow is modeled. The different mechanisms of particle transport to the wall are considered, i.e., Brownian motion, turbulent diffusion and turbophoresis. The Saffman lift force, the electrostatic force, the virtual mass effect and wall surface roughness are taken into account in the model developed. A boundary condition that accounts for the probability of particle sticking to the wall is suggested. An analytical solution for deposition of small Brownian particles is obtained. A particle relaxation time range, where the model developed is reliably applicable, is evaluated. Computational results obtained at different particle-wall sticking probabilities in the wide particle relaxation time range are presented and discussed.

KW - Deposition

KW - Diffusion

KW - Mass transfer

KW - Mathematical modeling

KW - Particle Sticking Probability

KW - Turbulence

UR - http://www.scopus.com/inward/record.url?scp=80051687244&partnerID=8YFLogxK

U2 - 10.1016/j.ces.2011.06.015

DO - 10.1016/j.ces.2011.06.015

M3 - Article

AN - SCOPUS:80051687244

VL - 66

SP - 4561

EP - 4572

JO - Chemical Engineering Science

JF - Chemical Engineering Science

SN - 0009-2509

IS - 20

ER -